Study

Fishing profiles of Danish seiners and bottom trawlers in relation to current EU management regulations

  • Published source details Noack T., Frandsen R.P., Wieland K., Krag L.A., Berg F. & Madsen N. (2017) Fishing profiles of Danish seiners and bottom trawlers in relation to current EU management regulations. Fisheries Management and Ecology, 24, 436-445.

Actions

This study is summarised as evidence for the following.

Action Category

Use a larger mesh size

Action Link
Marine Fish Conservation
  1. Use a larger mesh size

    A replicated study in 1997–2012 in two areas of seabed in the Skagerrak and Kattegat, Northern Europe (Noack et al. 2017) found that increasing the mesh size did not typically reduce the amount of undersized fish in bottom trawls or seine nets. For both trawl and seine nets, the ratio of undersized individuals/total number of individuals in catches was lower with larger mesh sizes (>109 mm) compared to smaller mesh sizes (90–109 mm) for one of six fish species, and similar between mesh sizes for five (data reported as statistical results). Data were collected in 1997–2012 by a discard sampling programme, from 460 and 285 commercial deployments by bottom trawlers (74 vessels) and seine netters (33 vessels), respectively. The mesh sizes used by each gear type were grouped into two categories: ≥110 mm and 90–109 mm. Regulatory changes during the sampling period included mandatory square mesh panels in trawl nets (2000 and 2011 – see original paper for specifications). After each deployment, the lengths of all fish were recorded.

    (Summarised by: Chris Barrett)

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